Cryomechanical test frame for materials qualification

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    "description": "Envisaged scope of supply \u2022 Dry cryostat compatible with digital image correlation, conventional contact-based extensometery and point sensors (e.g., strain gauges). Some compromise in performance is permissible when conducting measurements using DIC setups requiring windows. Target temperature is as low as possible, minimum temperature requirement is 10 K (with DIC). \u2022 Temperature control to within +- 1 K. \u2022 Modularity and flexibility to support a range of diagnostics and potential future modifications. \u2022 Sufficiently large enough to accommodate standard sized testing in line with ASTM E8 and E606 \u2022 Must also be compatible with small scale materials testing (e.g., SSJ3 sample). \u2022 Robust high vacuum chamber with appropriate thermal radiation shielding. \u2022 Must be able to support a fully aligned rigid load string. \u2022 The load string should be flexible and allow the testing of complex geometry samples and subcomponents. \u2022 Diagnostics to help optimise the performance of the system. I.e. be flexible enough to optimise conduction pathways. \u2022 Quick sample changeover is highly desirable. Preferred testing throughput of at least 2 tests a day for tensile testing. \u2022 Must be able to support long term testing programmes in excess of 100 tests. \u2022 Robust and repeatable temperature control system and sensor interface with sample. \u2022 Must interface with a four columns Zwick SS-CF Kappa 100 kN load frame or similar. \u2022 Pull bar feed throughs with bellows. \u2022 Vacuum pumping solutions via suitable flanges. \u2022 Support a minimum vacuum of 1 x 10-6 mbar. \u2022 Ability to backfill vacuum using dry gas (e.g. from compressed N2 cylinder) \u2022 Windows and ports to facilitate and permit digital image correlation (DIC). \u2022 Sufficient access to permit DIC calibration. \u2022 Doors and/or sufficient access to permit sample exchange. \u2022 Be able to support uniform temperature testing. \u2022 Be able to actively monitor temperature at specific locations on the sample. \u2022 Be able to apply a thermal gradient across the specimen with 50 K difference from either end of the gauge length of the specimen (Stretch target). \u2022 Feedthroughs for in-chamber services (e.g., cryo pump, diagnostics, etc\u2026 ). \u2022 Easy to use control system. \u2022 Control system allows vacuum and cooling to automatically start via timer (to optimise test throughput). \u2022 Extensometer feed throughs and supports. \u2022 Heating solution mechanical supports (if required), access, and service feedthroughs. \u2022 Internal heating to speed up warm up. \u2022 Be able to operate for prolonged periods of time in order to support fatigue testing. \u2022 Cryogenic TMF testing capability is also desirable but not essential.",
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    "title": "Cryomechanical test frame for materials qualification"
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